abstract |
Salts of oxaalkylene diamines of the formula I H2N- (R¹-O) n-R²-NH2 I in which R¹ and R² can be the same or different and each represent an alkylene radical having 2 to 4 carbon atoms and n is an integer from 1 to 3 , And alkanedicarboxylic acids with 4 to 12 carbon atoms terephthalic acid or isophthalic acid, characterized by a content of hydrazine. |